Mercurial > hg > mercurial-crew-with-dirclash
annotate hgext/convert/common.py @ 5377:756a43a30e34
convert: readd --filemap
To handle merges correctly, this revision adds a filemap_source class
that wraps a converter_source and does the work necessary to calculate
the subgraph we're interested in.
The wrapped converter_source must provide a new getchangedfiles method
that, given a revision rev, and an index N, returns the list of files
that are different in rev and its Nth parent.
The implementation depends on the ability to skip some revisions and to
change the parents field of the commit objects that we returned earlier.
To make the conversion restartable, we assume the revisons in the
revmapfile are topologically sorted.
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
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date | Thu, 04 Oct 2007 23:21:37 -0300 |
parents | e710874247d1 |
children | 8a2915f57dfc |
rev | line source |
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1 # common code for the convert extension |
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2 import base64 |
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3 import cPickle as pickle |
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4 |
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5 def encodeargs(args): |
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6 def encodearg(s): |
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7 lines = base64.encodestring(s) |
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8 lines = [l.splitlines()[0] for l in lines] |
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9 return ''.join(lines) |
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10 |
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11 s = pickle.dumps(args) |
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12 return encodearg(s) |
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13 |
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14 def decodeargs(s): |
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15 s = base64.decodestring(s) |
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16 return pickle.loads(s) |
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17 |
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18 class NoRepo(Exception): pass |
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19 |
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20 SKIPREV = 'hg-convert-skipped-revision' |
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21 |
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22 class commit(object): |
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23 def __init__(self, author, date, desc, parents, branch=None, rev=None): |
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24 self.author = author |
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25 self.date = date |
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26 self.desc = desc |
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27 self.parents = parents |
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28 self.branch = branch |
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29 self.rev = rev |
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30 |
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31 class converter_source(object): |
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32 """Conversion source interface""" |
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33 |
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34 def __init__(self, ui, path, rev=None): |
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35 """Initialize conversion source (or raise NoRepo("message") |
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36 exception if path is not a valid repository)""" |
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37 self.ui = ui |
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38 self.path = path |
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39 self.rev = rev |
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40 |
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41 self.encoding = 'utf-8' |
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42 |
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43 def before(self): |
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44 pass |
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45 |
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46 def after(self): |
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47 pass |
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48 |
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49 def setrevmap(self, revmap, order): |
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50 """set the map of already-converted revisions |
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51 |
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52 order is a list with the keys from revmap in the order they |
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53 appear in the revision map file.""" |
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54 pass |
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55 |
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56 def getheads(self): |
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57 """Return a list of this repository's heads""" |
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58 raise NotImplementedError() |
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59 |
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60 def getfile(self, name, rev): |
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61 """Return file contents as a string""" |
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62 raise NotImplementedError() |
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63 |
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64 def getmode(self, name, rev): |
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65 """Return file mode, eg. '', 'x', or 'l'""" |
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66 raise NotImplementedError() |
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67 |
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68 def getchanges(self, version): |
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69 """Returns a tuple of (files, copies) |
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70 Files is a sorted list of (filename, id) tuples for all files changed |
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71 in version, where id is the source revision id of the file. |
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72 |
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73 copies is a dictionary of dest: source |
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74 """ |
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75 raise NotImplementedError() |
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76 |
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77 def getcommit(self, version): |
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78 """Return the commit object for version""" |
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79 raise NotImplementedError() |
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80 |
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81 def gettags(self): |
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82 """Return the tags as a dictionary of name: revision""" |
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83 raise NotImplementedError() |
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84 |
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85 def recode(self, s, encoding=None): |
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86 if not encoding: |
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87 encoding = self.encoding or 'utf-8' |
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88 |
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89 if isinstance(s, unicode): |
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90 return s.encode("utf-8") |
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91 try: |
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92 return s.decode(encoding).encode("utf-8") |
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93 except: |
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94 try: |
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95 return s.decode("latin-1").encode("utf-8") |
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96 except: |
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97 return s.decode(encoding, "replace").encode("utf-8") |
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98 |
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99 def getchangedfiles(self, rev, i): |
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100 """Return the files changed by rev compared to parent[i]. |
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101 |
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102 i is an index selecting one of the parents of rev. The return |
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103 value should be the list of files that are different in rev and |
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104 this parent. |
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105 |
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106 If rev has no parents, i is None. |
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107 |
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108 This function is only needed to support --filemap |
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109 """ |
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110 raise NotImplementedError() |
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111 |
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112 class converter_sink(object): |
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113 """Conversion sink (target) interface""" |
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114 |
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115 def __init__(self, ui, path): |
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116 """Initialize conversion sink (or raise NoRepo("message") |
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117 exception if path is not a valid repository)""" |
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118 raise NotImplementedError() |
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119 |
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120 def getheads(self): |
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121 """Return a list of this repository's heads""" |
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122 raise NotImplementedError() |
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123 |
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124 def revmapfile(self): |
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125 """Path to a file that will contain lines |
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126 source_rev_id sink_rev_id |
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127 mapping equivalent revision identifiers for each system.""" |
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128 raise NotImplementedError() |
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129 |
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130 def authorfile(self): |
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131 """Path to a file that will contain lines |
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132 srcauthor=dstauthor |
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133 mapping equivalent authors identifiers for each system.""" |
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134 return None |
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135 |
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136 def putfile(self, f, e, data): |
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137 """Put file for next putcommit(). |
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138 f: path to file |
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139 e: '', 'x', or 'l' (regular file, executable, or symlink) |
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140 data: file contents""" |
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141 raise NotImplementedError() |
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142 |
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143 def delfile(self, f): |
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144 """Delete file for next putcommit(). |
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145 f: path to file""" |
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146 raise NotImplementedError() |
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147 |
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148 def putcommit(self, files, parents, commit): |
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149 """Create a revision with all changed files listed in 'files' |
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150 and having listed parents. 'commit' is a commit object containing |
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151 at a minimum the author, date, and message for this changeset. |
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152 Called after putfile() and delfile() calls. Note that the sink |
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153 repository is not told to update itself to a particular revision |
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154 (or even what that revision would be) before it receives the |
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155 file data.""" |
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156 raise NotImplementedError() |
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157 |
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158 def puttags(self, tags): |
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159 """Put tags into sink. |
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160 tags: {tagname: sink_rev_id, ...}""" |
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161 raise NotImplementedError() |
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162 |
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163 def setbranch(self, branch, pbranch, parents): |
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164 """Set the current branch name. Called before the first putfile |
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165 on the branch. |
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166 branch: branch name for subsequent commits |
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167 pbranch: branch name of parent commit |
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168 parents: destination revisions of parent""" |
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169 pass |